Window ventilator



Q m w f Jan. 27. 1925.

A." A. CRAIG WINDOW VENTILATOR Filed Sept. 16, 1921 Patented Jan. 27,1925.

UNITED STATES ARTHUR A. CRAIG, OF CHICAGO, ILLINOIS.

WINDOW VENTILATOR.

Application filed September 16, 1921.

To all whom it may concern Be it known that I, ARTHUR A. CRAIG, acitizen of the United States, residing at Chicago, in the county of Cookand State of Illinois, have invented a certain new and usefulImprovement in Window Ventilators, of which the following is a full,clear, concise, and exact description, reference being had to theaccompanying drawings forming a part of this specification.

My invention relates to window ventila-, tors and is an improvement overthe device disclosed in my co-pending application Serial No. 427,695,filed December 2, 1920. My improved ventilator is intended for use inwindow frames, though it will be apparent that the device has utility inany place where controlled ventilation is desirable.

Window ventilators, as constructed heretofore, are adapted for insertionin a window frame, and in order to compensate for variation in size,they are constructed to be extensible. A large majority of these devicesinterfere with opening and closing of the window, while many haveproposed the use of various locking devices for holding the ventilatorin the window frame. A cumbersome and expensive construction has beenthe result, which has greatly retarded the extensive use of windowventilators.

In my prior application, provision has been made for causing theventilator to be selflocking in the window frame, without interferingwith the window. This is accomplished by the use of material which, of

its very nature, is compressible. Thus pressing it in place, byextending the length, securely locks the ventilator in place.

In the present invention, I propose to improve the construction of thisdevice by mounting upon each end thereof strips of material having anexceptionally high gripping ability. The provision of verticalreinforcing strips at each end of the ventilator serves as means foracquiring an increased gripping surface without making the devicecumbersome.

One of the main objects of this invention is to obtain a ventilator ofthe simplest construction, which may be cheaply and quickly produced,and which will securely hold it self in position, directing the incomingair upwardly and preventing drafts occurring at the points of engagementor between the panel members. 7

Serial No. 5Q1,083.

In the accompanying drawings in which I have illustrated one embodimentof my invention, Figure 1 is a fragmentary iso metric view of a windowframe having a ventilator embodying my invention inserted therein;

Figure 2 is an elevational view of the side of the ventilator oppositeto that shown. in Figure 1;

Figure 3 is a top edge view of the same,

Figure 4 is a fragmentary end detail of the ventilator,

Figure 5 is a section taken on line 55 of Figure 2, 1

'Figure 6 is a detail view showing the manner of fastening the endreinforcing strip to a panel; and

Figure 7 is a view of the ventilator in section illustrating one panelnarrower in width than the other to produce a tight engagement with thewindow sill. v

The ventilator comprises the extensible frame consisting of the panelmembers 4: and 5, which are made of any suitable character. The innerends of the panels are provided with reinforcing strips 6 on the outerface only, which permit the two members to lie close to each other, andthereby prevent currents of air from circulating therebetween.

As is shown, the panel members 4 and 5 are so arranged that relativemovement is permitted, thereby making it possible to adjust theventilator to various size window frames. To this end, slots 7 areprovided in the panel 4 preferably adjacent the inner end, and in theseslots ride tension screws or bolts 8. The bolts 8 are secured in theopposite panel 5 and project through to the outer face of the panel 4.On this end of the bolt 8, a thumb nut 9 is provided which allows thedegree of engagement of the two panel members to be suitably adjusted.

Likewise, the panel 5 is provided with slots 10 disposed at the outeredge of the inner end, and the slot 11 disposed centrally. Tension bolts8 and thumb nuts 9 ride in the slots 10 and 11 for the purpose above dcscribed. It will be noted that the slots 7 and 10 serve to hold togetherthe adjoining ends, while the slot 11 serves to retain to gethcr themiddle portions of the panel members. This arrangement prevents bulgingor warping, and increases the ease with which the panel members may beadjusted.

In order to facilitate this adjustment and obviate any possibilty of thetwo panel mom,-

- )anels are made is imn'ia'terial so far as the invention is concerned.although material of high compressibility is preferable. In order toprotectthe longitudinal'edges of the panel members from wearing. strips1% are employed, these being secured in any suitable way, as forinstance, by taking along each ;face,as shown in Figure 5. The materialbeing compressible, the prongs l6 formedby tacking will sink there intoand provide a secure fasteningof the strips H. which are channeled overthe edges'of each Pa I have shown in Figure 1. the ventilator insertedin a window frame 17. Its posi tion in relation to the, sash members issuch that the opening. may be. varied. without disturbing theventilator. It then extended length-wise to engage forcibly with thewindow frame 'which results in com pressing the edges of the panels.This adjustment is retained by tightening the tension bol-tsl). Inorder. that a positive grip of the ventilator in the window frame isobtained, means are provided at each end which engage the window frame.having an inherently high degree of frictional or grippingability. Thestrip 1-l extends preferably to the end of the panel along eachlongitudinal edge, and between these strips ateach edge a similar, sidestrip 18 is mounted. Against thestrip 18 at each side ofthe panel, a.reinforcing member 19 is disposed, which functions to stiffen the panelsedge and at the'same time increase the engaging surface.

It willJbe -notedthat these members 19 protrude slightly beyond the, endof the panel, andthat friction material 20 is pro vided to encompassthem in order to cover theengaging edge surface. Retaining elelHC nlS21. may befemployed to lie against the outer side of the frictionmaterial to hold it securely about the strips, 19. may be resorted tofor holding the end members on the panels. though Ihave illustratedrivets 22. passing on through to theopposite side wherethey are headedfor maintainingthem in. place. It-will bej'noted as. any advantageousfeature, that the edges of thefriction material2Qlprotrudingslightly.from the panel member. obtain in, ,efiect a larger engaging Any meansarea than that actually provided. More over. a perfect setting withrespect to its position in the window may be had.

is will be seen in Figure (l, a novel means of securing the reinforcingstrips (1 to the panels between which are interposed the strips la. isproposed. Along the length of the. reinforcing; strips c a plurality ofho are pierced and extended into the panel -l. p edging pins are thenforcibly inserted. so that the points 26 project slightly, whicharetrimmed oll' later on to obtain. a summit surface.

in important feature of the invention resides in cutting the lowerlongitudinal edge of the. panels in such a manner that a tightengagement is obtained with the window sill. If each of the panels areof the mic widthv and in alignment, a crack will be left between theouter panel and the window sill when the ventilator is inserted at anangle. That is to say, the panel op posile lo the one facing theinclination \Vlll be. raised out of engagement with the sill. 'loovercome this I propose shortening the. width of the panel facing theinclination. which as shown in Figure 'Tis panel 5, and. if necessary inorder to obtain a. surface engagement with the sill. trimming. off theedge. at an. angle, as indicated at'28. Thus. the lower edge. of theventilator will meet. the window sill in close engagement throughout itslength.

From the foregoing description it is apparent that l have provided avery simple. and prtu-licalwindow ventilator which is capable of beingheld by friction in view of the frictional engaging end strips. theselatter strips assuring a positive grip with the window frame. Anyangular position of the ventilator in the window frame may be had, whilethe lower longitudinal edge will always engage the window sill beeausevof one panel being of less width. I do not intend to be limited to thedetails shown. but consider that various modifications may be madewithout departing from the SCUIM of my invention as claimed.

I claim:

1. In combination with a window opening. a ventilator comprising anextensible frame formed of a plurality of panel n'iembers. reinforcingstrips extendingalong theouter end and ying against the side faces ofsaid panel members. and friction means covering the edges. of saidreinforcing strips.

2. In combination. a. ventilator adapted for insertion in a windowframe. said vent-ilator being extensible and having its edges engagingthe window l frame .for holding it in any desired position. said edgescomprising additional means protruding slightly at each side of theventilator to obtain a substantially wide frictionalv surface engagementwith the window frame, said means lilo permitting the holding force toreact in the plane of said ventilator.

3. In COll'lblllatlOll, a ventilator adapted for insertion in a Windowframe, said venti lator comprising a plurality of panels car ried inextensible engaging relation, reinforcing strips disposed at the outerends of said panels, frictional material bent around said strips so asto cover the outer edge thereof, and retaining members for holding oneedge of said frictional material against said reinforcing strips, saidretaining members lying substantially from end to end of saidreinforcing strips.

4. In combination, a ventilator adapted for insertion in a Window frame,the end edges of said ventilator engaging the sash members of the Windowframe, and means extending along the opposite sides of said end edgesfor cushioning the same against the sash members, the cushioning actionof said means being in the plane of said ventilator.

In combination, a ventilator adapted for insertion in a window frame,the end edges of said ventilator engaging sash members of the Windowframe a pair of strips fastened at each end so that their outer verticaledges protrude slightly, and friction material mounted on said stripsfor covering said outer vertical edges.

In Witness whereof, I hereunto subscribe my name this 12thday ofSeptember, 1921.

ARTHUR A. CRAIG.

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